| /** |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server.fingerprint; |
| |
| import android.content.Context; |
| import android.hardware.fingerprint.Fingerprint; |
| import android.text.TextUtils; |
| import android.util.SparseArray; |
| |
| import com.android.internal.annotations.GuardedBy; |
| |
| import java.util.List; |
| |
| /** |
| * Utility class for dealing with fingerprints and fingerprint settings. |
| */ |
| public class FingerprintUtils { |
| |
| private static final Object sInstanceLock = new Object(); |
| private static FingerprintUtils sInstance; |
| |
| @GuardedBy("this") |
| private final SparseArray<FingerprintsUserState> mUsers = new SparseArray<>(); |
| |
| public static FingerprintUtils getInstance() { |
| synchronized (sInstanceLock) { |
| if (sInstance == null) { |
| sInstance = new FingerprintUtils(); |
| } |
| } |
| return sInstance; |
| } |
| |
| private FingerprintUtils() { |
| } |
| |
| public List<Fingerprint> getFingerprintsForUser(Context ctx, int userId) { |
| return getStateForUser(ctx, userId).getFingerprints(); |
| } |
| |
| public void addFingerprintForUser(Context ctx, int fingerId, int userId) { |
| getStateForUser(ctx, userId).addFingerprint(fingerId, userId); |
| } |
| |
| public void removeFingerprintIdForUser(Context ctx, int fingerId, int userId) { |
| getStateForUser(ctx, userId).removeFingerprint(fingerId); |
| } |
| |
| public void renameFingerprintForUser(Context ctx, int fingerId, int userId, CharSequence name) { |
| if (TextUtils.isEmpty(name)) { |
| // Don't do the rename if it's empty |
| return; |
| } |
| getStateForUser(ctx, userId).renameFingerprint(fingerId, name); |
| } |
| |
| private FingerprintsUserState getStateForUser(Context ctx, int userId) { |
| synchronized (this) { |
| FingerprintsUserState state = mUsers.get(userId); |
| if (state == null) { |
| state = new FingerprintsUserState(ctx, userId); |
| mUsers.put(userId, state); |
| } |
| return state; |
| } |
| } |
| } |
| |